US2986500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeposition of bright nickel
Assignee: Primerica Inc
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Filing: 1959-04-21
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Granted: 1961-05-30
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Expires: 1979-04-21
Abstract
No abstract record available.
Inventors
- 👤 Passal Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:46
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/12; C25D3/14; C25D3/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
IN THE PROCESS OF ELECTROPLATING NICKEL FROM NICKELCONTAINING BATHS, THE IMPROVEMENT WHICH COMPRISES INCORPORATING IN SAID BATHS BETWEEN 1 G./L. AND 25 G./L. OF A SECONDARY BRIGHTENER CHARACTERIZED BY HAVING AT LEAST ONE GROUP SELECTED FROM SULFONE AND SULFONIC ACID GROUPS ATTACHED TO A NUCLEAR CARBON OF A HOMOCYCLIC AROMATIC RING, AND BETWEEN 0.05 G./L. AND 1.2 G./O. OF N-VINYL-2PYRROLIDONE, WHEREBY LUSTROUS NICKEL ELECTRODEPOSITS ARE OBTAINED.
Claim 2
Dependent Claim
66 words
IN THE PROCESS OF ELECTROPLATING NICKEL FROM NICKELCONTAINING BATHS, THE IMPROVEMENT WHICH COMPRISES INCORPORATING IN SAID BATHS BETWEEN 1 G./L. AND 25 G./L. OF A SECONDARY BRIGHTENER CHARACTERIZED BY HAVING AT LEAST ONE GROUP SELECTED FROM SULFONE AND SULFONIC ACID GROUPS ATTACHED TO A NUCLEAR CARBON OF A HOMOCYCLIC AROMATIC RING, AND BETWEEN 0.05 G./L. AND 1.2 G./O. OF N-VINYL-2PYRROLIDONE, WHEREBY LUSTROUS NICKEL ELECTRODEPOSITS ARE OBTAINED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |